Eudokia's children & kaisar Ioannes from the start impeded Romanos IV

Summary:
Two of Eudokia's sons, Michael (VII) and Konstantios, were from the start co-emperors with Romanos IV, and he soon promoted Andronikos also to the same position. They, together with their uncle Ioannes the kaisar, assisted Romanos, expecting to succeed him, but constantly got in his way, thus harming the empire 
Dates:
1068 
Andronikos Doukas, brother of Michael VII (Andronikos 62)
  • Assisted together with his brothers and uncle (Konstantios 61, Michael 7, Ioannes 62) his stepfather (Romanos 4) expecting to succeed him, and constantly got in his way, thus harming the empire (:) συνέδρους εἶχε τοὺς προγονούς, ἐφέδρους δὲ μᾶλλον εἰπεῖν ἀληθέστερον Skylitzes Continuatus 124.12-16
  • Assisted his stepfather (Romanos 4) when the latter ascended the throne: in association with Michael 7, Konstantios 61 (:) εἶχεν ἐφέδρους τούς τε προγόνους αὐτοῦ Glykas 608.13-14
  • After the accession of his step-father (Romanos 4 Diogenes) he was associated to his rule: in association with Konstantios 61, Michael 7 (:) κἂν ὅτι μάλιστα προγονοὺς εἶχε περὶ αὐτὸν καὶ συνέδρους, εἰπεῖν δὲ καὶ ἐφέδρους Attaleiates: History 101.21-23 / 77.11-12
Ioannes Doukas, kaisar (Ioannes 62)
  • After the accession of Romanos 4 Diogenes he was associated to his rule together with his nephews (Michael 7, Konstantios 61, Andronikos 62) (:) καὶ σὺν αὐτοῖς τὸν τούτων πατράδελφον Attaleiates: History 101.23-102.1 / 77.13
  • Assisted together with his nephews (Andronikos 62, Konstantios 61, Michael 7) the new emperor (Romanos 4) but got in his way constantly thus harming the empire (:) Skylitzes Continuatus 124.12-16
  • Assisted the new emperor (Romanos 4) when the latter ascended the throne: in association with Andronikos 62, Konstantios 61, Michael 7 (:) εἶχεν ἐφέδρους τούς τε προγόνους αὐτοῦ καὶ Καίσαρα Glykas 608.13-14
Konstantios Doukas, brother of Michael VII (Konstantios 61)
  • Assisted together with his brothers and uncle (Andronikos 62, Michael 7, Ioannes 62) his stepfather (Romanos 4) expecting to succeed him, and constantly got in his way, thus harming the empire (:) συνέδρους εἶχε τοὺς προγονούς, ἐφέδρους δὲ μᾶλλον εἰπεῖν ἀληθέστερον Skylitzes Continuatus 124.12-16
Emperor Michael VII Doukas (Michael 7)
  • After the accession of his step-father (Romanos 4 Diogenes) he was associated to his rule: in association with Andronikos 62, Konstantios 61 (:) κἂν ὅτι μάλιστα προγονοὺς εἶχε περὶ αὐτὸν καὶ συνέδρους, εἰπεῖν δὲ καὶ ἐφέδρους Attaleiates: History 101.21-23 / 77.11-12
  • Assisted together with his brothers and uncle (Andronikos 62, Konstantios 61, Ioannes 62) his stepfather (Romanos 4) expecting to succeed him, and constantly got in his way, thus harming the empire (:) συνέδρους εἶχε τοὺς προγονούς, ἐφέδρους δὲ μᾶλλον εἰπεῖν ἀληθέστερον Skylitzes Continuatus 124.12-16
  • Assisted his stepfather (Romanos 4) when the latter ascended the throne: in association with Andronikos 62, Konstantios 61 (:) εἶχεν ἐφέδρους τούς τε προγόνους αὐτοῦ Glykas 608.13-14
Emperor Romanos IV Diogenes (Romanos 4)
  • As soon as he ascended the throne not only did he take care of the current political situation, but also of the army's organisation, although he associated to his rule his step-sons (Michael 7, Konstantios 61, Andronikos 62) and their uncle Ioannes 62 (:) κἂν ὅτι μάλιστα προγονοὺς εἶχε περὶ αὐτὸν καὶ συνέδρους Attaleiates: History 101.19-102.1 / 77.9-13
  • When he ascended the throne he took care of military matters, assisted by his stepsons (Andronikos 62, Konstantios 61, Michael 7) who expected to succeed him, and by the kaisar Ioannes 62, all of them getting in his way and harming the empire (:) συνέδρους εἶχε τοὺς προγονούς, ἐφέδρους δὲ μᾶλλον εἰπεῖν ἀληθέστερον Skylitzes Continuatus 124.10-16
  • Appointed his step-son Andronikos 62 co-emperor (:) αὐτὸς βασιλέα χειροτονήσας Attaleiates: History 106.1-2 / 80.15