Sibling

According to the Old English Dictionary:

sibling

Add :-- His módor cóm him tó and his siblingas (fratres, Mt. 12, 46), Hml. A. 31, 175. Syblinga contribulium, An. Ox. 6. Man ne mihte æt fruman wífian búton on his siblingum, Ælfc. Gen. Thw. 2, 6. Gefeoht betwux siblingum bellum plusquam civile . . . þæt feórðe gefeoht þe betwux freóndum bið is swíde earmlic, Hml. S. 25, 707. Seó éhtnnys bið ealra biterost þe bið fram siblingum, Hml. Th. ii. 542, 28. Swilce hí þonne lufian heora siblingas, ðe ǽr on lífe ne hí sylfe ne heora mágas ne lufedon, i. 332, 30. sibling