Leofweard is a masculine OE name formed from the common elements lēof (‘dear’) and weard (‘guardian, protector’). The name is evidenced only from the tenth century onwards; the handful of examples currently in PASE include the abbot of Muchelney at the time of the Norman Conquest (Leofweard 3).
von Feilitzen 1937: Olof von Feilitzen, The Pre-Conquest Personal Names of Domesday Book, Nomina Germanica 3 (Uppsala: Almqvist and Wiksells, 1937)
Spellings in Domesday Book: Leuuard; Leuardus, Leuuord, Liuuard
Spellings in Exon: Liuuardus
Forms in modern scholarship:
von Feilitzen head forms: Lēofweard
Phillimore edition: Leofward, Leofhard (Essex)
Alecto edition: Leofweard