What does Lowell mean?
From the Norman French 'Louvel', a diminutive of 'lou' ('wolf', from Latin lupus), meaning 'little wolf'. Originally a nickname/surname (compare the Latin diminutive lupellus, 'wolf cub').
What does Ulric mean?
Middle English form of the Old English name Wulfric, from 'wulf' ('wolf') and 'ric' ('power, ruler'), meaning 'wolf power' or 'wolf ruler'. Note it is often conflated with the German Ulrich, which derives from Uodalrich ('heritage/prosperity ruler') and does NOT contain the wolf element.