I am looking for any further sources on the following Alamannic settlements. As far as I know, all of theose below were laeti, ie those given land with heriditary rights in return for military service in time of need. I give the sources I have, any other information would be greatly appreciated, especially where they were settled.

276 - 279 Probus defeats alemannic insurection around the Rhine and along with their leader Igillus "sent [them] to Britain, where they settled, and were subsequently very serviceable to the emperor when any insurrection broke out."
(Zosiumus)

306, Crocus, who is described as "Alamannorum rege," plays a key role in the accession of Constantine at York.
(Aurelius Victor)

372 Valentinian sends the Alamannic Fraomarius of the Bucinobantes (an alamannic canton), along with other Alamannic troops commanded by
Bitheridius and Hortarius, to Britain.
(Ammianus Marcellinus)