I didn’t know anything about the de Tosnys before I started looking into this, but they seem to have been extremely prominent in the eleventh through thirteenth centuries. Roger I, the first well-documented family member, was exiled from Normandy and spent his time away killing Muslims in the Reconquista. He eventually came back, although the peace didn’t last for long. In 1035, some new duke came to power in Normandy - Bill? Willy? Whatever - and Roger refused to serve him due to the fact the new duke was, literally, a bastard. Instead, Roger took the opportunity to raid the holdings of nearby nobles, which got him killed in 1040. Twenty-six years later, of course, that bastard duke would invade and conquer England, earning himself a more famous sobriquet… accompanied by Roger’s grandson, Raoul II. Raoul also had the good fortune to marry Isabel de Montfort, daughter of Simon de Montfort (no, not the Simon de Montfort who basically exterminated the Cathars). There are reports of Isabel riding out in full armor and participating in at least one local conflict during the late eleventh century. No word on whether she bore arms, sadly.
The fact that literally everyone in the male de Tosny line is named either Ralph, Raoul, or Roger (and some of these might be misspellings of each other) complicates things, but I’d speculate that the Ralph featured here is the seventh Ralph, lord of Flamstead in Hertfordshire, born in 1253 and died in 1295. I can’t quite get the dates to line up for other Rs de Tosny. If I’m right, he broke the centuries-long name chain by naming his only son… Robert. Maybe he shouldn’t have; it seems like Robert died before 1309, passing the English property of the de Tosnys to Alice, Countess of Warwick.