Maybe you already know, but ...

Croke, Brian, “Leo I and the palace guard”, Byzantion: Revue International des études byzantines, 78 (2005), 117-151.

Best regards

And, in german:

Siebigs, Gereon, Kaiser Leo I. Das oströmische Reich in den ersten drei Jahren

seiner Regierung (457–460 n.Chr.). 2 Bde., Berlin/New York, De Gruyter 2010

Thanks for those, I did not have either...though I had Croke's other article.

Cheers,

Mike

Maybe you know my article: Andreas Külzer, Leo I., Kaiser. Reallexikon für Antike und Christentum 22 (Bonn 2008) 1177–1188?

Thanks for that Andreas. I will read with interest.