Helma

According to the Old English Dictionary:

an;

Helma

m. A HELM, rudder :-- Helma clavus, Ælfc. Gl.104; Som. 77, 124; Wrt. Voc. 56, 42. Be ðæm is swíðe sweotol ðætte God ághwæs wealt mid ðæm helman his gódnesse Deus omnia bonitatis clavo gubernare jure credatur, Bt. 35, 4; Fox 160, 14. [Icel. hjálm; f.] helma