A promising approach to cross-lingual transfer of syntactic dependency parsers is to use multiple source languages and to tie model parameters across related languages. This idea was first explored for weakly supervised learning (Cohen and Smith, 2009; Snyder et al., 2009; Berg-Kirkpatrick and Klein, 2010) and recently by <cite>Naseem et al. (2012)</cite> for multisource cross-lingual transfer.