I do remember Leo saying something about Hebrew being associated with Ugaritic (sp) but I may have got this wrong
You didn't get it wrong. The Bible itself calls the Hebrew language a "language of Canaan": "In that day there will prove to be five cities in the land of Egypt speaking the language of Ca'naan and swearing to Jehovah of Armies ..." (Isaiah 19:18)
According to scholars, Cananites and Hebrews are, linguistically and for their material culture, undistinguishable during early Iron Age - roughly the "Judges" period, 1200-1000 b.C.E. - (see Amihai Mazar, The Iron Age I, in Amnon Ben-Tor, The Archaeology of Ancient Israel, New Haven/London, Yale University Press/The Open University of Israel 1992, pp. 258-301; Mark S. Smith, The Early History of God. Jahweh and the Other Deities in Ancient Israel, Grand Rapids, Eerdmans 2002, p. 27).
Despite the huge redaction work the Bible texts have undergone, some fragments are thought by the scholars to be nearer (linguistically and conceptually) to their "canaanite" roots. Among them, Genesis 32 and 49; Exodus 15, Deuteronomy 32, 33; Judges 5; Abacuc 3, Psalms 18 and 68.
On the huge impact of the Ras Shamra (Ugarit) discoveries on OT studies you can see Mark S. Smith, Untold Stories. The Bible and Ugaritic Studies in the Twentieth Century, Peabody, Hendrickson 2001; Waine T. Pitard, Voices from the Dust: The Tablets from Ugarit and the Bible, in Mark W. Chavalas, K. Lawson Younger Jr (ed.), Mesopotamia and the Bible. Comparative Explorations, Journal for the Study of the Old Testament Supplement Series 341, Grand Rapids, Baker 2002, pp. 251-275.