sŭbulcus, i, m. [from sus; formed in analogy with bubulcus],
a swine-herd , Varr. R. R. 2, 4, 14 and 20; Mart. 10, 98, 10; Verg. E. 10, 19 Wagn. (al. bubulci).
subulcus ī, m sus, a swine-herd : tardi, V.(al. bubulci). ...
An Elementary Latin Dictionary